Home / 92,215.40-138,452.70-72,516.20

Finding the Fourth Proportional to 92,215.40, 138,452.70 and 72,516.20

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Solution

The fourth proportional to 92,215.40, 138,452.70 and 72,516.20 is: 108,876.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,215.40 : 138,452.70 = 72,516.20 : x
  2. Step 2: Convert to fraction form
    92,215.40/138,452.70 = 72,516.20/x
  3. Step 3: Cross multiply
    92,215.40x = 138,452.70 × 72,516.20
  4. Step 4: Simplify right side
    92,215.40x = 10,040,063,683.74
  5. Step 5: Solve for x
    x = 10,040,063,683.74/92,215.40
  6. Step 6: Final answer
    x = 108,876.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.